USB: Phidgets should check create_device_file() return value
device_create_file() could fail, add proper error paths for this condition.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/misc/phidgetkit.c b/drivers/usb/misc/phidgetkit.c
index 3f508957..9a8d137 100644
--- a/drivers/usb/misc/phidgetkit.c
+++ b/drivers/usb/misc/phidgetkit.c
@@ -193,8 +193,11 @@
struct interfacekit *kit = dev_get_drvdata(dev); \
change_string(kit, buf, number - 1); \
return count; \
-} \
-static DEVICE_ATTR(lcd_line_##number, S_IWUGO, NULL, lcd_line_##number);
+}
+
+#define lcd_line_attr(number) \
+ __ATTR(lcd_line_##number, S_IWUGO, NULL, lcd_line_##number)
+
set_lcd_line(1);
set_lcd_line(2);
@@ -232,15 +235,22 @@
kfree(buffer);
return retval;
}
-static DEVICE_ATTR(backlight, S_IWUGO, NULL, set_backlight);
+
+static struct device_attribute dev_lcd_line_attrs[] = {
+ lcd_line_attr(1),
+ lcd_line_attr(2),
+ __ATTR(backlight, S_IWUGO, NULL, set_backlight)
+};
static void remove_lcd_files(struct interfacekit *kit)
{
+ int i;
+
if (kit->lcd_files_on) {
dev_dbg(&kit->udev->dev, "Removing lcd files\n");
- device_remove_file(kit->dev, &dev_attr_lcd_line_1);
- device_remove_file(kit->dev, &dev_attr_lcd_line_2);
- device_remove_file(kit->dev, &dev_attr_backlight);
+
+ for (i=0; i<ARRAY_SIZE(dev_lcd_line_attrs); i++)
+ device_remove_file(kit->dev, &dev_lcd_line_attrs[i]);
}
}
@@ -248,6 +258,7 @@
{
struct interfacekit *kit = dev_get_drvdata(dev);
int enable;
+ int i, rc;
if (kit->ifkit->has_lcd == 0)
return -ENODEV;
@@ -258,9 +269,12 @@
if (enable) {
if (!kit->lcd_files_on) {
dev_dbg(&kit->udev->dev, "Adding lcd files\n");
- device_create_file(kit->dev, &dev_attr_lcd_line_1);
- device_create_file(kit->dev, &dev_attr_lcd_line_2);
- device_create_file(kit->dev, &dev_attr_backlight);
+ for (i=0; i<ARRAY_SIZE(dev_lcd_line_attrs); i++) {
+ rc = device_create_file(kit->dev,
+ &dev_lcd_line_attrs[i]);
+ if (rc)
+ goto out;
+ }
kit->lcd_files_on = 1;
}
} else {
@@ -271,7 +285,13 @@
}
return count;
+out:
+ while (i-- > 0)
+ device_remove_file(kit->dev, &dev_lcd_line_attrs[i]);
+
+ return rc;
}
+
static DEVICE_ATTR(lcd, S_IWUGO, NULL, enable_lcd_files);
static void interfacekit_irq(struct urb *urb, struct pt_regs *regs)
@@ -403,9 +423,12 @@
struct interfacekit *kit = dev_get_drvdata(dev); \
\
return sprintf(buf, "%d\n", !!test_bit(value - 1, &kit->outputs));\
-} \
-static DEVICE_ATTR(output##value, S_IWUGO | S_IRUGO, \
- show_output##value, set_output##value);
+}
+
+#define output_attr(value) \
+ __ATTR(output##value, S_IWUGO | S_IRUGO, \
+ show_output##value, set_output##value)
+
show_set_output(1);
show_set_output(2);
show_set_output(3);
@@ -423,14 +446,24 @@
show_set_output(15);
show_set_output(16);
+static struct device_attribute dev_output_attrs[] = {
+ output_attr(1), output_attr(2), output_attr(3), output_attr(4),
+ output_attr(5), output_attr(6), output_attr(7), output_attr(8),
+ output_attr(9), output_attr(10), output_attr(11), output_attr(12),
+ output_attr(13), output_attr(14), output_attr(15), output_attr(16)
+};
+
#define show_input(value) \
-static ssize_t show_input##value(struct device *dev, struct device_attribute *attr, char *buf) \
+static ssize_t show_input##value(struct device *dev, \
+ struct device_attribute *attr, char *buf) \
{ \
struct interfacekit *kit = dev_get_drvdata(dev); \
\
return sprintf(buf, "%d\n", (int)kit->inputs[value - 1]); \
-} \
-static DEVICE_ATTR(input##value, S_IRUGO, show_input##value, NULL);
+}
+
+#define input_attr(value) \
+ __ATTR(input##value, S_IRUGO, show_input##value, NULL)
show_input(1);
show_input(2);
@@ -449,6 +482,13 @@
show_input(15);
show_input(16);
+static struct device_attribute dev_input_attrs[] = {
+ input_attr(1), input_attr(2), input_attr(3), input_attr(4),
+ input_attr(5), input_attr(6), input_attr(7), input_attr(8),
+ input_attr(9), input_attr(10), input_attr(11), input_attr(12),
+ input_attr(13), input_attr(14), input_attr(15), input_attr(16)
+};
+
#define show_sensor(value) \
static ssize_t show_sensor##value(struct device *dev, \
struct device_attribute *attr, \
@@ -457,8 +497,10 @@
struct interfacekit *kit = dev_get_drvdata(dev); \
\
return sprintf(buf, "%d\n", (int)kit->sensors[value - 1]); \
-} \
-static DEVICE_ATTR(sensor##value, S_IRUGO, show_sensor##value, NULL);
+}
+
+#define sensor_attr(value) \
+ __ATTR(sensor##value, S_IRUGO, show_sensor##value, NULL)
show_sensor(1);
show_sensor(2);
@@ -469,6 +511,11 @@
show_sensor(7);
show_sensor(8);
+static struct device_attribute dev_sensor_attrs[] = {
+ sensor_attr(1), sensor_attr(2), sensor_attr(3), sensor_attr(4),
+ sensor_attr(5), sensor_attr(6), sensor_attr(7), sensor_attr(8)
+};
+
static int interfacekit_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
struct usb_device *dev = interface_to_usbdev(intf);
@@ -477,7 +524,7 @@
struct interfacekit *kit;
struct driver_interfacekit *ifkit;
int pipe, maxp, rc = -ENOMEM;
- int bit, value;
+ int bit, value, i;
ifkit = (struct driver_interfacekit *)id->driver_info;
if (!ifkit)
@@ -541,74 +588,49 @@
goto out;
}
- if (ifkit->outputs >= 4) {
- device_create_file(kit->dev, &dev_attr_output1);
- device_create_file(kit->dev, &dev_attr_output2);
- device_create_file(kit->dev, &dev_attr_output3);
- device_create_file(kit->dev, &dev_attr_output4);
- }
- if (ifkit->outputs >= 8) {
- device_create_file(kit->dev, &dev_attr_output5);
- device_create_file(kit->dev, &dev_attr_output6);
- device_create_file(kit->dev, &dev_attr_output7);
- device_create_file(kit->dev, &dev_attr_output8);
- }
- if (ifkit->outputs == 16) {
- device_create_file(kit->dev, &dev_attr_output9);
- device_create_file(kit->dev, &dev_attr_output10);
- device_create_file(kit->dev, &dev_attr_output11);
- device_create_file(kit->dev, &dev_attr_output12);
- device_create_file(kit->dev, &dev_attr_output13);
- device_create_file(kit->dev, &dev_attr_output14);
- device_create_file(kit->dev, &dev_attr_output15);
- device_create_file(kit->dev, &dev_attr_output16);
+ for (i=0; i<ifkit->outputs; i++ ) {
+ rc = device_create_file(kit->dev, &dev_output_attrs[i]);
+ if (rc)
+ goto out2;
}
- if (ifkit->inputs >= 4) {
- device_create_file(kit->dev, &dev_attr_input1);
- device_create_file(kit->dev, &dev_attr_input2);
- device_create_file(kit->dev, &dev_attr_input3);
- device_create_file(kit->dev, &dev_attr_input4);
- }
- if (ifkit->inputs >= 8) {
- device_create_file(kit->dev, &dev_attr_input5);
- device_create_file(kit->dev, &dev_attr_input6);
- device_create_file(kit->dev, &dev_attr_input7);
- device_create_file(kit->dev, &dev_attr_input8);
- }
- if (ifkit->inputs == 16) {
- device_create_file(kit->dev, &dev_attr_input9);
- device_create_file(kit->dev, &dev_attr_input10);
- device_create_file(kit->dev, &dev_attr_input11);
- device_create_file(kit->dev, &dev_attr_input12);
- device_create_file(kit->dev, &dev_attr_input13);
- device_create_file(kit->dev, &dev_attr_input14);
- device_create_file(kit->dev, &dev_attr_input15);
- device_create_file(kit->dev, &dev_attr_input16);
+ for (i=0; i<ifkit->inputs; i++ ) {
+ rc = device_create_file(kit->dev, &dev_input_attrs[i]);
+ if (rc)
+ goto out3;
}
- if (ifkit->sensors >= 4) {
- device_create_file(kit->dev, &dev_attr_sensor1);
- device_create_file(kit->dev, &dev_attr_sensor2);
- device_create_file(kit->dev, &dev_attr_sensor3);
- device_create_file(kit->dev, &dev_attr_sensor4);
+ for (i=0; i<ifkit->sensors; i++ ) {
+ rc = device_create_file(kit->dev, &dev_sensor_attrs[i]);
+ if (rc)
+ goto out4;
}
- if (ifkit->sensors >= 7) {
- device_create_file(kit->dev, &dev_attr_sensor5);
- device_create_file(kit->dev, &dev_attr_sensor6);
- device_create_file(kit->dev, &dev_attr_sensor7);
- }
- if (ifkit->sensors == 8)
- device_create_file(kit->dev, &dev_attr_sensor8);
- if (ifkit->has_lcd)
- device_create_file(kit->dev, &dev_attr_lcd);
+ if (ifkit->has_lcd) {
+ rc = device_create_file(kit->dev, &dev_attr_lcd);
+ if (rc)
+ goto out4;
+
+ }
dev_info(&intf->dev, "USB PhidgetInterfaceKit %d/%d/%d attached\n",
ifkit->sensors, ifkit->inputs, ifkit->outputs);
return 0;
+out4:
+ while (i-- > 0)
+ device_remove_file(kit->dev, &dev_sensor_attrs[i]);
+
+ i = ifkit->inputs;
+out3:
+ while (i-- > 0)
+ device_remove_file(kit->dev, &dev_input_attrs[i]);
+
+ i = ifkit->outputs;
+out2:
+ while (i-- > 0)
+ device_remove_file(kit->dev, &dev_output_attrs[i]);
out:
if (kit) {
if (kit->irq)
@@ -629,6 +651,7 @@
static void interfacekit_disconnect(struct usb_interface *interface)
{
struct interfacekit *kit;
+ int i;
kit = usb_get_intfdata(interface);
usb_set_intfdata(interface, NULL);
@@ -641,68 +664,19 @@
cancel_delayed_work(&kit->do_notify);
- if (kit->ifkit->outputs >= 4) {
- device_remove_file(kit->dev, &dev_attr_output1);
- device_remove_file(kit->dev, &dev_attr_output2);
- device_remove_file(kit->dev, &dev_attr_output3);
- device_remove_file(kit->dev, &dev_attr_output4);
- }
- if (kit->ifkit->outputs >= 8) {
- device_remove_file(kit->dev, &dev_attr_output5);
- device_remove_file(kit->dev, &dev_attr_output6);
- device_remove_file(kit->dev, &dev_attr_output7);
- device_remove_file(kit->dev, &dev_attr_output8);
- }
- if (kit->ifkit->outputs == 16) {
- device_remove_file(kit->dev, &dev_attr_output9);
- device_remove_file(kit->dev, &dev_attr_output10);
- device_remove_file(kit->dev, &dev_attr_output11);
- device_remove_file(kit->dev, &dev_attr_output12);
- device_remove_file(kit->dev, &dev_attr_output13);
- device_remove_file(kit->dev, &dev_attr_output14);
- device_remove_file(kit->dev, &dev_attr_output15);
- device_remove_file(kit->dev, &dev_attr_output16);
- }
+ for (i=0; i<kit->ifkit->outputs; i++)
+ device_remove_file(kit->dev, &dev_output_attrs[i]);
- if (kit->ifkit->inputs >= 4) {
- device_remove_file(kit->dev, &dev_attr_input1);
- device_remove_file(kit->dev, &dev_attr_input2);
- device_remove_file(kit->dev, &dev_attr_input3);
- device_remove_file(kit->dev, &dev_attr_input4);
- }
- if (kit->ifkit->inputs >= 8) {
- device_remove_file(kit->dev, &dev_attr_input5);
- device_remove_file(kit->dev, &dev_attr_input6);
- device_remove_file(kit->dev, &dev_attr_input7);
- device_remove_file(kit->dev, &dev_attr_input8);
- }
- if (kit->ifkit->inputs == 16) {
- device_remove_file(kit->dev, &dev_attr_input9);
- device_remove_file(kit->dev, &dev_attr_input10);
- device_remove_file(kit->dev, &dev_attr_input11);
- device_remove_file(kit->dev, &dev_attr_input12);
- device_remove_file(kit->dev, &dev_attr_input13);
- device_remove_file(kit->dev, &dev_attr_input14);
- device_remove_file(kit->dev, &dev_attr_input15);
- device_remove_file(kit->dev, &dev_attr_input16);
- }
+ for (i=0; i<kit->ifkit->inputs; i++)
+ device_remove_file(kit->dev, &dev_input_attrs[i]);
- if (kit->ifkit->sensors >= 4) {
- device_remove_file(kit->dev, &dev_attr_sensor1);
- device_remove_file(kit->dev, &dev_attr_sensor2);
- device_remove_file(kit->dev, &dev_attr_sensor3);
- device_remove_file(kit->dev, &dev_attr_sensor4);
- }
- if (kit->ifkit->sensors >= 7) {
- device_remove_file(kit->dev, &dev_attr_sensor5);
- device_remove_file(kit->dev, &dev_attr_sensor6);
- device_remove_file(kit->dev, &dev_attr_sensor7);
- }
- if (kit->ifkit->sensors == 8)
- device_remove_file(kit->dev, &dev_attr_sensor8);
+ for (i=0; i<kit->ifkit->sensors; i++)
+ device_remove_file(kit->dev, &dev_sensor_attrs[i]);
- if (kit->ifkit->has_lcd)
+ if (kit->ifkit->has_lcd) {
device_remove_file(kit->dev, &dev_attr_lcd);
+ remove_lcd_files(kit);
+ }
device_unregister(kit->dev);
diff --git a/drivers/usb/misc/phidgetmotorcontrol.c b/drivers/usb/misc/phidgetmotorcontrol.c
index d9ac7f9..6b59b62 100644
--- a/drivers/usb/misc/phidgetmotorcontrol.c
+++ b/drivers/usb/misc/phidgetmotorcontrol.c
@@ -215,9 +215,12 @@
struct motorcontrol *mc = dev_get_drvdata(dev); \
\
return sprintf(buf, "%d\n", mc->speed[value]); \
-} \
-static DEVICE_ATTR(speed##value, S_IWUGO | S_IRUGO, \
- show_speed##value, set_speed##value);
+}
+
+#define speed_attr(value) \
+ __ATTR(speed##value, S_IWUGO | S_IRUGO, \
+ show_speed##value, set_speed##value)
+
show_set_speed(0);
show_set_speed(1);
@@ -250,9 +253,12 @@
struct motorcontrol *mc = dev_get_drvdata(dev); \
\
return sprintf(buf, "%d\n", mc->acceleration[value]); \
-} \
-static DEVICE_ATTR(acceleration##value, S_IWUGO | S_IRUGO, \
- show_acceleration##value, set_acceleration##value);
+}
+
+#define acceleration_attr(value) \
+ __ATTR(acceleration##value, S_IWUGO | S_IRUGO, \
+ show_acceleration##value, set_acceleration##value)
+
show_set_acceleration(0);
show_set_acceleration(1);
@@ -264,8 +270,10 @@
struct motorcontrol *mc = dev_get_drvdata(dev); \
\
return sprintf(buf, "%dmA\n", (int)mc->_current[value]); \
-} \
-static DEVICE_ATTR(current##value, S_IRUGO, show_current##value, NULL);
+}
+
+#define current_attr(value) \
+ __ATTR(current##value, S_IRUGO, show_current##value, NULL)
show_current(0);
show_current(1);
@@ -278,14 +286,29 @@
struct motorcontrol *mc = dev_get_drvdata(dev); \
\
return sprintf(buf, "%d\n", (int)mc->inputs[value]); \
-} \
-static DEVICE_ATTR(input##value, S_IRUGO, show_input##value, NULL);
+}
+
+#define input_attr(value) \
+ __ATTR(input##value, S_IRUGO, show_input##value, NULL)
show_input(0);
show_input(1);
show_input(2);
show_input(3);
+static struct device_attribute dev_attrs[] = {
+ input_attr(0),
+ input_attr(1),
+ input_attr(2),
+ input_attr(3),
+ speed_attr(0),
+ speed_attr(1),
+ acceleration_attr(0),
+ acceleration_attr(1),
+ current_attr(0),
+ current_attr(1)
+};
+
static int motorcontrol_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
struct usb_device *dev = interface_to_usbdev(intf);
@@ -293,7 +316,7 @@
struct usb_endpoint_descriptor *endpoint;
struct motorcontrol *mc;
int pipe, maxp, rc = -ENOMEM;
- int bit, value;
+ int bit, value, i;
interface = intf->cur_altsetting;
if (interface->desc.bNumEndpoints != 1)
@@ -355,24 +378,18 @@
goto out;
}
- device_create_file(mc->dev, &dev_attr_input0);
- device_create_file(mc->dev, &dev_attr_input1);
- device_create_file(mc->dev, &dev_attr_input2);
- device_create_file(mc->dev, &dev_attr_input3);
-
- device_create_file(mc->dev, &dev_attr_speed0);
- device_create_file(mc->dev, &dev_attr_speed1);
-
- device_create_file(mc->dev, &dev_attr_acceleration0);
- device_create_file(mc->dev, &dev_attr_acceleration1);
-
- device_create_file(mc->dev, &dev_attr_current0);
- device_create_file(mc->dev, &dev_attr_current1);
+ for (i=0; i<ARRAY_SIZE(dev_attrs); i++) {
+ rc = device_create_file(mc->dev, &dev_attrs[i]);
+ if (rc)
+ goto out2;
+ }
dev_info(&intf->dev, "USB PhidgetMotorControl attached\n");
return 0;
-
+out2:
+ while (i-- > 0)
+ device_remove_file(mc->dev, &dev_attrs[i]);
out:
if (mc) {
if (mc->irq)
@@ -393,6 +410,7 @@
static void motorcontrol_disconnect(struct usb_interface *interface)
{
struct motorcontrol *mc;
+ int i;
mc = usb_get_intfdata(interface);
usb_set_intfdata(interface, NULL);
@@ -405,19 +423,8 @@
cancel_delayed_work(&mc->do_notify);
- device_remove_file(mc->dev, &dev_attr_input0);
- device_remove_file(mc->dev, &dev_attr_input1);
- device_remove_file(mc->dev, &dev_attr_input2);
- device_remove_file(mc->dev, &dev_attr_input3);
-
- device_remove_file(mc->dev, &dev_attr_speed0);
- device_remove_file(mc->dev, &dev_attr_speed1);
-
- device_remove_file(mc->dev, &dev_attr_acceleration0);
- device_remove_file(mc->dev, &dev_attr_acceleration1);
-
- device_remove_file(mc->dev, &dev_attr_current0);
- device_remove_file(mc->dev, &dev_attr_current1);
+ for (i=0; i<ARRAY_SIZE(dev_attrs); i++)
+ device_remove_file(mc->dev, &dev_attrs[i]);
device_unregister(mc->dev);
diff --git a/drivers/usb/misc/phidgetservo.c b/drivers/usb/misc/phidgetservo.c
index 66be951..7163f05 100644
--- a/drivers/usb/misc/phidgetservo.c
+++ b/drivers/usb/misc/phidgetservo.c
@@ -1,7 +1,7 @@
/*
* USB PhidgetServo driver 1.0
*
- * Copyright (C) 2004 Sean Young <sean@mess.org>
+ * Copyright (C) 2004, 2006 Sean Young <sean@mess.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -235,86 +235,108 @@
\
return sprintf(buf, "%d.%02d\n", servo->degrees[value], \
servo->minutes[value]); \
-} \
-static DEVICE_ATTR(servo##value, S_IWUGO | S_IRUGO, \
- show_servo##value, set_servo##value);
+}
+#define servo_attr(value) \
+ __ATTR(servo##value, S_IWUGO | S_IRUGO, \
+ show_servo##value, set_servo##value)
show_set(0);
show_set(1);
show_set(2);
show_set(3);
+static struct device_attribute dev_attrs[] = {
+ servo_attr(0), servo_attr(1), servo_attr(2), servo_attr(3)
+};
+
static int
servo_probe(struct usb_interface *interface, const struct usb_device_id *id)
{
struct usb_device *udev = interface_to_usbdev(interface);
struct phidget_servo *dev;
- int bit, value;
+ int bit, value, rc;
+ int servo_count, i;
dev = kzalloc(sizeof (struct phidget_servo), GFP_KERNEL);
if (dev == NULL) {
dev_err(&interface->dev, "%s - out of memory\n", __FUNCTION__);
- return -ENOMEM;
+ rc = -ENOMEM;
+ goto out;
}
dev->udev = usb_get_dev(udev);
dev->type = id->driver_info;
+ dev->dev_no = -1;
usb_set_intfdata(interface, dev);
do {
bit = find_first_zero_bit(&device_no, sizeof(device_no));
value = test_and_set_bit(bit, &device_no);
- } while(value);
+ } while (value);
dev->dev_no = bit;
dev->dev = device_create(phidget_class, &dev->udev->dev, 0,
"servo%d", dev->dev_no);
if (IS_ERR(dev->dev)) {
- int rc = PTR_ERR(dev->dev);
- clear_bit(dev->dev_no, &device_no);
- kfree(dev);
- return rc;
+ rc = PTR_ERR(dev->dev);
+ dev->dev = NULL;
+ goto out;
}
- device_create_file(dev->dev, &dev_attr_servo0);
- if (dev->type & SERVO_COUNT_QUAD) {
- device_create_file(dev->dev, &dev_attr_servo1);
- device_create_file(dev->dev, &dev_attr_servo2);
- device_create_file(dev->dev, &dev_attr_servo3);
+ servo_count = dev->type & SERVO_COUNT_QUAD ? 4 : 1;
+
+ for (i=0; i<servo_count; i++) {
+ rc = device_create_file(dev->dev, &dev_attrs[i]);
+ if (rc)
+ goto out2;
}
dev_info(&interface->dev, "USB %d-Motor PhidgetServo v%d.0 attached\n",
- dev->type & SERVO_COUNT_QUAD ? 4 : 1,
- dev->type & SERVO_VERSION_30 ? 3 : 2);
+ servo_count, dev->type & SERVO_VERSION_30 ? 3 : 2);
if (!(dev->type & SERVO_VERSION_30))
dev_info(&interface->dev,
"WARNING: v2.0 not tested! Please report if it works.\n");
return 0;
+out2:
+ while (i-- > 0)
+ device_remove_file(dev->dev, &dev_attrs[i]);
+out:
+ if (dev) {
+ if (dev->dev)
+ device_unregister(dev->dev);
+ if (dev->dev_no >= 0)
+ clear_bit(dev->dev_no, &device_no);
+
+ kfree(dev);
+ }
+
+ return rc;
}
static void
servo_disconnect(struct usb_interface *interface)
{
struct phidget_servo *dev;
+ int servo_count, i;
dev = usb_get_intfdata(interface);
usb_set_intfdata(interface, NULL);
- device_remove_file(dev->dev, &dev_attr_servo0);
- if (dev->type & SERVO_COUNT_QUAD) {
- device_remove_file(dev->dev, &dev_attr_servo1);
- device_remove_file(dev->dev, &dev_attr_servo2);
- device_remove_file(dev->dev, &dev_attr_servo3);
- }
+ if (!dev)
+ return;
+
+ servo_count = dev->type & SERVO_COUNT_QUAD ? 4 : 1;
+
+ for (i=0; i<servo_count; i++)
+ device_remove_file(dev->dev, &dev_attrs[i]);
device_unregister(dev->dev);
usb_put_dev(dev->udev);
dev_info(&interface->dev, "USB %d-Motor PhidgetServo v%d.0 detached\n",
- dev->type & SERVO_COUNT_QUAD ? 4 : 1,
- dev->type & SERVO_VERSION_30 ? 3 : 2);
+ servo_count, dev->type & SERVO_VERSION_30 ? 3 : 2);
clear_bit(dev->dev_no, &device_no);
kfree(dev);